CN209372405U - A kind of reversal valve fatigue test device - Google Patents

Abstract

The utility model discloses a reversing valve fatigue testing device, which comprises a workbench, on which a first valve body clamping seat is installed, and a connecting rod is hinged on the workbench, and the end of the connecting rod far away from the workbench is rotatably connected with a camshaft; The workbench is slidingly connected with a plurality of uprights. On the upper upright of the workbench, an upper working plate for pressing the valve core is installed. On the lower part of the workbench, a lower working plate is installed on the upright for installing the second valve body clamping seat. . The device realizes the mechanized detection of the valve body, and one device can perform detection on a plurality of valve bodies, and the detection efficiency of the device is high and the versatility is strong.

Description

A reversing valve fatigue test device

technical field

The utility model relates to the field of valve body detection, in particular to a reversing valve fatigue testing device.

Background technique

The reversing valve is a liquid flow or air distribution mechanism in a hydraulic or pneumatic circuit, which mainly controls the action of a hydraulic cylinder or an air cylinder by connecting or cutting off the flow path. The reset of the single solenoid control reversing valve is realized by the recovery of the elastic deformation of the spring. According to the inspection and inspection requirements of the industry standard, the reversing performance test must be carried out before the reversing valve leaves the factory. The sealing performance of the valve core is reset by the spring. The commonly used test method is to manually switch the power on and off to perform the reversing action of the reversing valve. The action is single, easy to fatigue, and the counting is prone to errors.

Contents of the invention

Aiming at the deficiencies in the prior art, the utility model provides a reversing valve fatigue testing device, which realizes the mechanized detection of the valve body, and one device can test multiple valve bodies, and the detection efficiency of the device is high, Versatile.

A reversing valve fatigue test device, including a workbench, the first valve body clamping seat is installed on the workbench, the lower part of the workbench is hinged with a connecting rod, and the end of the connecting rod far away from the workbench is connected with the camshaft rotary connection;

The workbench is slidably connected with a plurality of columns, an upper connecting plate for pressing the valve core is installed on the column at the upper part of the workbench, and a lower connecting plate for installing the second valve body clamping seat is installed on the column at the lower part of the workbench. connecting plate.

Preferably, an oil-free lubricating bush or a linear bearing is installed between the workbench and the column.

Preferably, the camshaft is coaxially connected with a large pulley for providing inertial force, the large pulley is connected with a belt, and the belt transmission is connected with a small pulley, and the small pulley is connected with a drive for providing power motor.

Preferably, the motor is fixedly connected with a motor base, and the motor base is fixedly connected with the base, and a bracket for supporting the large pulley and the camshaft is installed on the base.

Preferably, the valve body clamping seat includes corner plates used in pairs, the lower part of the corner plates is equipped with T-shaped nuts, and the upper plane of the workbench and the upper plane of the lower connecting plate are both provided with T-shaped grooves , the T-shaped nut cooperates with the T-shaped groove to realize the adjustment of the clamping distance of the valve body clamping seat, and is used for clamping reversing valves of different sizes.

The beneficial effects of the utility model:

(1) The utility model clamps the reversing valve through the clamping seat of the valve body, and pushes the spool of the reversing valve by moving the workbench up and down, and then carries out the fatigue test of the spring inside the valve body.

(2) T-shaped nuts and T-shaped slots can adjust the clamping distance of the clamping seat to adapt to reversing valves of different sizes.

(3) The large pulley acts as an inertia to prevent the camshaft from being stuck at the dead point during rotation.

(4) The upper connecting plate and the lower connecting plate are used together to make full use of the space above and below the workbench when the camshaft rotates, so that multiple valve bodies can be tested at one time.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a three-dimensional structure diagram one of the utility model;

Fig. 2 is the three-dimensional structure diagram two of the utility model;

Fig. 3 is a partially enlarged view of A in Fig. 2;

Fig. 4 is three-dimensional structural drawing of the present utility model;

Fig. 5 is a side view of the utility model;

In the figure: 1. base, 2. motor seat, 3. motor, 4. belt, 5. lower connecting plate, 6. workbench, 7. upper connecting plate, 8. corner plate, 9. column, 10. tightening Screw, 11, connecting rod, 12, camshaft, 13, grub screw, 14, reversing valve, 15, T-shaped nut, 16, large pulley, 17, small pulley, 18, support.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments of the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.

In describing the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation , are constructed and operated in a specific orientation and therefore cannot be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features.

In the description of the present utility model, unless otherwise clearly stipulated and limited, the terms "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connection, or integration; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

Below in conjunction with Fig. 1 to Fig. 5, the utility model is described in further detail:

As shown in Figures 1-5, a motor base 2 and a bracket 18 are installed on the upper plane of the base 1, a motor 3 is fixedly installed on the motor base 2, and a transmission shaft is installed on the bracket 18. The shaft end of motor 3 is equipped with small pulley 17, and realizes fixing and transmission by expansion sleeve between motor shaft and small pulley. Small belt pulley 17 is connected with large belt pulley 16 transmissions by belt 4, and large belt pulley 16 is sleeved on wherein one end of transmission shaft, and large belt pulley and transmission shaft are fixed and transmitted with connecting key. Small pulley 17 and large pulley 16 all adopt casting molding, for reducing weight, both are all processed with lightening hole. The other end of the transmission shaft is fitted with a camshaft 12, the camshaft 12 is hinged to one end of the connecting rod 11, the other end of the connecting rod 11 is hinged to the workbench 6, and the workbench 6 is slidingly connected with four columns 9, and the workbench 6 is connected to the column Install oil-free lubricated bearings or linear bearings between 9. The upper and lower parts of the workbench 6 are respectively provided with an upper connecting plate 7 and a lower connecting plate 5 fixedly connected with the column 9 . Threaded holes are processed on the side of the upper connecting plate 7 and the lower connecting plate 5, and the column is tightened by the set screw 10 to realize the positioning connection of the upper connecting plate 7 and the lower connecting plate 5 with the column. Loosen the set screw 10, the upper connecting plate 7 and the lower connecting plate 5 can slide on the column 9 to adjust the installation space. Two T-shaped grooves are respectively processed on the upper plane of the workbench 6 and the lower connecting plate 5, T-shaped nuts are installed in the T-shaped grooves, and a corner plate 8 is installed on the top of each T-shaped nut, connected by grub screws 13. The two angle plates are used together to form a valve body mounting seat to clamp the reversing valve 14 .

In order to ensure the hardness of the parts, the connecting rod 11 and the camshaft 12 are all quenched, and the hardness requirement is 50-55HRC. All parts are chamfered and deburred. During installation, the mating surfaces are coated with anti-rust oil, and the rotating connection ensures flexible operation.

The specific working process of the device is as follows:

Clamp the valve seat of the reversing valve 14 with two angle plates 8, tighten the grub screw 13, and make the valve stem of the reversing valve upward. Manually rotate the large pulley 16, mark the column 9 when the workbench 6 moves to the upper and lower limit positions, and fix the upper connecting plate 7 and the lower connecting plate 5 with the set screw 10 and the column 9. Start the motor 3, and the workbench moves up and down under the action of belt transmission and camshaft transmission. When it moves to the top, the upper connecting plate 7 contacts the valve stem of the reversing valve installed on the upper part and presses down the valve stem. When the table 6 moves down, the valve stem resets under the action of the spring in the valve body. When the worktable moves to the lowest end, the lower plane of the worktable contacts the valve stem of the reversing valve installed on the lower connecting plate 5 and presses down the valve stem. As the workbench moves up, the valve stem resets under the action of the spring in the valve body. Reciprocate in this way until the number of times the set value is reached. At this time, remove the reversing valve and check the spring return condition.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the present application will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (5)

1. a kind of reversal valve fatigue test device, which is characterized in that including workbench, the first valve body is equipped on the workbench Grip slipper, the workbench are hinged with connecting rod, and the connecting rod is connect far from one end of workbench with cam axle；

The workbench slidably connects multiple columns, is equipped with the upper work for pressing spool on the column in portion on the table Make plate, the lower working plate for installing the second valve body grip slipper is installed on the column of workbench lower part.

2. a kind of reversal valve fatigue test device as described in claim 1, which is characterized in that between the workbench and column Oil-free lubrication axle sleeve or linear bearing are installed.

3. a kind of reversal valve fatigue test device as described in claim 1, which is characterized in that the camshaft is coaxially connected with For providing the big belt wheel of inertia force, the big belt wheel is sequentially connected with belt, and the belt is sequentially connected with small pulley, described Small pulley is connected with for providing the motor of driving force.

4. a kind of reversal valve fatigue test device as claimed in claim 3, which is characterized in that the motor is fixedly connected with electricity Base, the motor cabinet are fixedly connected with pedestal, are also equipped on the pedestal and are used to support big belt wheel and cam shaft support.

5. a kind of reversal valve fatigue test device as described in claim 1, which is characterized in that the valve body grip slipper includes into To the gusset used, the gusset lower part is fitted with T-nut, and the upper plane of the workbench and the upper of lower connecting plate are put down Face is provided with T-slot, and the adjustment of valve body grip slipper clamp distance is realized in the T-nut and T-slot cooperation, to clamp not With the reversal valve of size.